⏫ Forwardport of #13050 to 2.3-develop branch

Applied pull request patch https://github.com/magento/magento2/pull/13050.patch (created by @robbie-thompson) based on commit(s):
  1. be39ce9

app/code/Magento/Indexer/Model/Message/Invalid.php

@@ -71,7 +71,7 @@ public function getText()
  return __(
  'One or more <a href="%1">indexers are invalid</a>. Make sure your <a href="%2" target="_blank">Magento cron job</a> is running.',
  $url,
- 'http://devdocs.magento.com/guides/v2.0/config-guide/cli/config-cli-subcommands-cron.html#config-cli-cron-bkg'
+ 'http://devdocs.magento.com/guides/v2.2/config-guide/cli/config-cli-subcommands-cron.html#create-or-remove-the-magento-crontab'
  );
  //@codingStandardsIgnoreEnd
  }